Title: A light-scattering study of dynamical carrier properties in cuprate systems
Authors : Opel, M.
Nemetschek, R.
Venturini, Francesca
Hackl, R.
Tutto, I.
Berger, H.
Forro, L.
Erb, A.
Revaz, B.
Walker, E.
Published in : Ferroelectrics
Volume(Issue) : 249
Issue : 1
Pages : 155
Pages to: 164
Publisher / Ed. Institution : Taylor & Francis
Issue Date: 2001
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subjects : Superconductor; Raman spectroscopy; Cuprates
Subject (DDC) : 530: Physics
Abstract: Results of inelastic light-scattering experiments are analysed in terms of a memory function M(ω) = ωλ(ω)+iΓ(ω). Using this approach dynamical scattering rates Γ(ω) = 1/τ(ω) and mass-enhancement factors 1 + λ(ω) = m*(ω)/m for the carriers are derived as a function of temperature T and doping p. The obtained quantities are in qualitative agreement with results from infrared spectroscopy and longitudinal transport. In addition, Raman scattering reveals new information about the anisotropy of the carrier properties. The anisotropy increases substantially towards lower doping when the influence of electronic correlations gain importance. The analysis turns out to be very useful for the understanding of the pseudogap in the normal state.
Departement: School of Engineering
Organisational Unit: Institute of Applied Mathematics and Physics (IAMP)
Publication type: Article in scientific Journal
DOI : 10.1080/00150190108214977
ISSN: 0015-0193
1563-5112
URI: https://digitalcollection.zhaw.ch/handle/11475/7029
Appears in Collections:Publikationen School of Engineering

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